Friction-clutch.



C. A. A. RAND.

FRIGTION CLUTCH.

APPLIGATION FILED MAR. 31, 1909.

947,851 Patented Jan. 25, 1910.

.JW @Mw M entre sfrafrns Parana omnes.

CHARLES A. A. RAND, OF CHICAGO, ILLINOIS, ASSIGNOR TO INTERNATIONALHARVESTER COMPANY, A CORPORATION OF VNEW' JERSEY.

FRICTIONCLUTCH.

Specification of Letters Patent. y

Patented Jan. 25, 1910.

Application filed March 31, 1909. Serial No. 486,970.

Chicago, in the county ot Cook and State I ot illinois, have inventedcertain new and useful Improvements in flt`riction-Clutiehes, of whichthe iollowing 1s a speciticatron.

approxin'lately three-iliomths ot the distance around il', and itsoppositie end upturned laterally upward and provided with a radialopening adapted to receive an adjusting screw l5, that portion ol thelever upon the side oppositie to the screw on a line pass* l ing throughthe axis ol the sha't't and the My invention relates to frictionclutches t of the type commonly called splitI ring, and consists inproviding means ior neutralizingl the effect of centrifugal force incausing the operative parts to prematurely engage, its object being toprovide a mechanism that will loe simple and strong in construction andetlicient in operation. .I attain these objects by means oit themechanism illustrated in the accompanying drawing, in which* Figure l isa plan view ot part ot the mechanism, showing the split ring portion ofthe clutch in its relaxed position vwithin the annular eoacting rimportion and the actuating lever operatively connected therewith; Fig. 2is a side elevation of Fig. l, showing the clutch controlling means;Fig.

3 is a plan view ot' the mechanism, showing l the split ring 1n itsexpanded position; lig. 4 1S a cross section o't' Fig. il, along thelino A-B thereof; and Fig. 5 is a detail draw ing representing a sideelevation o't the clutch actuating lever.

Like reference characters designate the same parts throughout theseveral views.

l is a shaft having loosely mounted thereon a clutch member 2, andintegral with the clutch member is a pinion designed to transmit motionto any part ot the machine as desired, the clutch member being providedwith a web portion et and an annular rim portion 5 projecting laterallytrom the j tace of the web.

6 is a eomplemental clutch member in el'uding a hub portion T secured tothe shaft by means of a key S. A ring portion S) is connected with thehub by means ol" an arm l and a eounterbalaneing portion ll projectingradially from said hub.V 'lhe ring portion is eut through at l2, and theadjacent ends are provided `with transverse opere ings in line with theaxis ot' the sha'tt and approximately in a diametrieal line passingthrough its axis, the openings being adapted to receive pins 13 thatextend outward Ytrom the face oi the ring and .have secured thereto oneend ot a clutch controlling lever Ylltthat partially eneireles theshat't, extending pins l-" having a greater weight than thi` portionupon the side receiving the screw, whereby centrifugal ft'orce will beoperative to cause the heavier portion ot' the lever to swing outward ina manner to contract the clutch ring.

lt represents a clutch controlling` cone slidahly mounted upon the shaftand adapt cd lo engage with the inner end ot the screw and provided withan annular groove IT adapted to receive. a common 'torni o't' clutchshipping fork. represented by '18. When the clutch controlling conc ismoved into engagement with the screw it causes thc inner cud ol thclever lo move away :from the axis ol thi` shat't. and its outer end,through its connection with the adjacent ends ot the ring. will causethe latter' to separate in a manner to 'torce the periphery ot the ringin contact with thc rim 5.

In the operation o't this type oit clutch in comm-tion with rapidlymoving parts as hcrctoliorc constructed, centrifugal force would causethe eontrolling lever to move in a direction to expand thc clutch ringland thereby cause itv to engage with its complemcntal clutch membcrin amanner to produce prcmaturc motion olf the operative parts hcrcot anddisturb the proper action ot the machine with which those parts wereconnrcled. ly means ot' my invention this evil is removed. as anymovement oit the lever, due to centrifugal ttor-ee, will operate toswing its inner end inward toward the shaitt anth through thectmneetions ot its outer end with the adjacent ends oli the split ring,cause them to approach each other in a manner to contract the ring andprevent it from engaging with thc surface ot the complelnental clutchmember.

that l claim as my invention. and desire to ccure by Letters lat'ent'.is:

.t trictitmal clutch including. in combination. a sha'tt. a clutchmember secured to said sha't't. a complemental clutch member looselymounted upon said shait, a split ring vForming part ot said tixed clutchmember, a `t'rict'ion rim Yforming part olE said loose vided with anadjustable screw radially arranged relative to the axis of the shaft, a

clutch controlling cone slidably mounted 15 upon said shaft and adaptedto engage with said sor-,ew in a manner to move the lever in a directionto expand the clutch in opposition to centrifugal force.

CHARLES A. A. RAND.

Titnesses I LYNN MAE COLLINS, E. V. BURGESS.

